NCERT Solutions for Class 8 Maths Chapter 13- Direct and Inverse Proportions

 

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NCERT Solutions for Class 8 Maths Chapter 13 Direct and Inverse Proportions

In this chapter, we are going to learn how to deal with problems based on direct and indirect proportions. The NCERT Solutions for Class 8 Maths Direct and Inverse Proportions are prepared and explained by the experts. Chapter 13 direct and inverse proportions contain 2 exercises with 21 questions.  The first exercise of this chapter covers questions on Direct proportion and similarly, the second exercise of this chapter covers questions from inverse proportions.

In our daily life, we come across many situations where changes in one quantity results changes in other quantity. In mathematics, two quantities are said to be in proportional - if the values of two quantities are related in such a way that changes in one results in a corresponding change in another quantity. For a better understanding of this chapter, NCERT is providing solved examples, exercises, and daily life activities at the end of every concept. In NCERT Class 8 Maths Chapter 13 Direct and Inverse Proportions we learn about two types of proportion- Direct Proportion and Inverse Proportion and also study there properties with applications. The brief about both proportional are following-

What is Direct Proportion?

Two values are Directly proportional it means to increase/decrease in one value results in a gradual increase/decrease in other value. Let's take an example:

Example-  Sunil goes to the stationery shop to buy two pencils. The two pencils cost him Rs. 4. Next week again Sunil goes to the stationery shop to buy 6 pencils. The six pencils cost in Rs. 12. So, in this situation when the number of pencils increases causes gradual increases in the total cost. It means the number of pencils and total cost are directly proportional.

        

What is Inverse Proportional?

Two values are Inversely proportional it means decreases in one value results in a gradual increase in other value. Example- If the distance is fixed, speed and time are inversely proportional to each other.

                                    Speed=\frac{Distance}{Time}

                                        Speed \propto \frac{Distance}{Time}        ( If Distance is fixed)

Topics of NCERT Class 8 Maths Chapter 13 Direct and Inverse Proportions-

  • 13.1 Introduction
  • 13.2 Direct Proportion
  • 13.3 Inverse Proportion

Questions and solutions of NCERT Class 8 Maths Direct and Inverse Proportions: 

NCERT Solutions For Class 8 Maths: Chapter-wise

Chapter -1 Rational Numbers             
Chapter -2 

Linear Equations in One Variable

Chapter-3

Understanding Quadrilaterals

Chapter-4

Practical Geometry

Chapter-5

Data Handling

Chapter-6

Squares and Square Roots

Chapter-7

Cubes and Cube Roots

Chapter-8

Comparing Quantities

Chapter-9

Algebraic Expressions and Identities

Chapter-10

Visualizing Solid Shapes

Chapter-11

Mensuration

Chapter-12

Exponents and Powers

Chapter-14

Factorization

Chapter-15

Introduction to Graphs

Chapter-16

Playing with Numbers

 

NCERT Solutions For Class 8: Subject-Wise

 

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